/*
 * Copyright (c) 2013, Klaus Hauschild
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification, are permitted provided
 * that the following conditions are met:
 *
 *   * Redistributions of source code must retain the above copyright notice, this list of conditions and
 *     the following disclaimer.
 *
 *   * Redistributions in binary form must reproduce the above copyright notice, this list of conditions
 *     and the following disclaimer in the documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
 * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
 * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */
package de.hauschild.worldcupn.core.match;

import playn.core.GroupLayer;
import playn.core.Image;
import playn.core.Key;
import playn.core.PlayN;
import playn.core.util.Callback;
import pythagoras.f.Point;
import de.hauschild.utilsn.core.gamestate.AbstractGameState;
import de.hauschild.utilsn.core.gamestate.GameState;
import de.hauschild.utilsn.core.gamestate.GameStateController;
import de.hauschild.utilsn.core.keyboard.Keys;

/**
 * @since 0.1.0
 * 
 * @author Klaus Hauschild
 */
public class FieldGameState extends AbstractGameState {

  private GroupLayer layer;

  public FieldGameState(final GameStateController gameStateController) {
    super(gameStateController);
  }

  @Override
  public void enter(final Class<? extends GameState> previousGameStateType, final Object... data) {
  }

  @Override
  public void exit() {
  }

  @Override
  public void init() {
    layer = PlayN.graphics().createGroupLayer();
    PlayN.graphics().rootLayer().add(layer);
    PlayN.assets().getImage("images/field.png").addCallback(new Callback<Image>() {

      @Override
      public void onFailure(final Throwable cause) {
        PlayN.log().error("Unable to load file image.", cause);
      }

      @Override
      public void onSuccess(final Image result) {
        layer.add(PlayN.graphics().createImageLayer(result));
      }

    });
    Keys.init();
  }

  @Override
  public void paint(final float alpha) {
  }

  @Override
  public void update(final int delta) {
    // PlayN.log().debug(layer.tx() + ", " + layer.ty());
    final Point translation = new Point(layer.tx(), layer.ty());
    if (Keys.keysDown().contains(Key.UP)) {
      translation.y -= 5;
    } else if (Keys.keysDown().contains(Key.DOWN)) {
      translation.y += 5;
    }
    if (Keys.keysDown().contains(Key.LEFT)) {
      translation.x -= 5;
    } else if (Keys.keysDown().contains(Key.RIGHT)) {
      translation.x += 5;
    }
    layer.setTranslation(translation.x, translation.y);
  }

}
